package com.heima.wemedia.filter;

import com.heima.model.threadlocal.WmThreadLocalUtils;
import com.heima.model.wemedia.pojos.WmUser;
import com.netflix.ribbon.proxy.annotation.Http;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.GenericFilterBean;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.util.Enumeration;
@WebFilter(value = "WmTokenFilter",urlPatterns = "/*")
@Slf4j
@Component
public class WmTokenFilter extends GenericFilterBean {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //获取userID的值
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        String userId = request.getHeader("userId");
        log.info("当前登陆用户信息为："+userId);
        //如果有 就放到threadlocal变量中
        if(StringUtils.isNotBlank(userId)){
            WmUser wmUser = new WmUser();
            wmUser.setId(Integer.valueOf(userId));
            WmThreadLocalUtils.setUser(wmUser);
        }
        //放行请求
        filterChain.doFilter(servletRequest,servletResponse);
        //清空
        WmThreadLocalUtils.clear();
    }

}
